EP 0551923 A2 19930721 - Consensus sync" data-sampling systems and methods.
Title (en)
Consensus sync" data-sampling systems and methods.
Title (de)
Datenabtastsystemen und -methoden mit Übereinstimmungssynchronisation.
Title (fr)
Systèmes et méthodes d'échantillonnage de données avec synchronisation par consensus.
Publication
Application
Priority
US 82223792 A 19920117
Abstract (en)
Image processing systems and methods for retrieving digital data stored in a plurality of contiguous data cells on photographic film. An image sensor samples the image data at a plurality of pixel positions in each of the data cells and generates grayscale image data that is processed into a one-dimensional stream of binary pixels. A data sampling system processes the binary pixels by first selecting those binary pixels that correspond to the data cell centers. Then, a digital output signal is constructed from the selected pixels to represent the original data stored on the film. The stream of binary pixels are read in series. In particular, transitions, detected in the stream of binary pixels, are used to periodically estimate the data cell pitch and the transition phase. A plurality of, e.g. N, suggested distances from the current pixel to the next sampling point are located using the transition phases of the most recent N transitions. A preferred sampling phase is determined through a histogram to find a consensus among the N suggested distances. The digital output signal is constructed from those pixels that occur at the preferred sampling phase. <IMAGE>
IPC 1-7
IPC 8 full level
G06F 17/30 (2006.01); G06T 1/20 (2006.01); G11B 7/0033 (2006.01); G11B 7/005 (2006.01); G11B 20/10 (2006.01)
CPC (source: EP US)
G06T 1/20 (2013.01 - EP US); G11B 7/0033 (2013.01 - EP US); G11B 7/005 (2013.01 - EP US); G11B 20/10 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0551923 A2 19930721; EP 0551923 A3 19960103; EP 0551923 B1 19991103; DE 69326905 D1 19991209; DE 69326905 T2 20000621; JP H05274359 A 19931022; US 5360968 A 19941101
DOCDB simple family (application)
EP 93100682 A 19930118; DE 69326905 T 19930118; JP 578893 A 19930118; US 82223792 A 19920117